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Commit 737a7c26 authored by Marcel Ziswiler's avatar Marcel Ziswiler Committed by Thierry Reding
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ARM: tegra: colibri: Activate STMPE811 touch controller 



Activate STMPE811 touch controller as found on Colibri T30 modules.

Signed-off-by: default avatarMarcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 6456e9c5

arch/arm/boot/dts/tegra30-colibri.dtsi

+40 −0
Original line number Diff line number Diff line
@@ -320,6 +320,46 @@ 
			};

		};



		/* STMPE811 touch screen controller */

		stmpe811@41 {

			compatible = "st,stmpe811";

			#address-cells = <1>;

			#size-cells = <0>;

			reg = <0x41>;

			interrupts = <TEGRA_GPIO(V, 0) IRQ_TYPE_LEVEL_LOW>;

			interrupt-parent = <&gpio>;

			interrupt-controller;

			id = <0>;

			blocks = <0x5>;

			irq-trigger = <0x1>;



			stmpe_touchscreen {

				compatible = "st,stmpe-ts";

				reg = <0>;

				/* 3.25 MHz ADC clock speed */

				st,adc-freq = <1>;

				/* 8 sample average control */

				st,ave-ctrl = <3>;

				/* 7 length fractional part in z */

				st,fraction-z = <7>;

				/*

				 * 50 mA typical 80 mA max touchscreen drivers

				 * current limit value

				 */

				st,i-drive = <1>;

				/* 12-bit ADC */

				st,mod-12b = <1>;

				/* internal ADC reference */

				st,ref-sel = <0>;

				/* ADC converstion time: 80 clocks */

				st,sample-time = <4>;

				/* 1 ms panel driver settling time */

				st,settling = <3>;

				/* 5 ms touch detect interrupt delay */

				st,touch-det-delay = <5>;

			};

		};



		/*

		 * LM95245 temperature sensor

		 * Note: OVERT_N directly connected to PMIC PWRDN